The New Posts and View all Subscribed Threads functions are not working any more. I mean they no longer show threads updated since the last time I visited them.

Sometimes New Posts works partially, sometimes not at all. I think the functions stopped working properly two or three days ago.

This is a shame, because it seriously disrupts the way I'm accustomed to following FF.

I don't think it's caused by anything at my end. Has anyone else noticed this problem?

Using Firefox with Vista.